您好，欢迎访问云南省农业科学院 机构知识库！

Physiological response of three micropropagated plantlets of Rhododendron hybrids for heat stress

文献类型： 外文期刊

作者： Oba, Elias G. 1 ; Hu, Jingfeng 3 ; Zhang, Zhihui 4 ; Li, Shifeng 1 ; Peng, Lvchun 1 ; Wang, Jihua 1 ; Xie, Weijia 1 ;

作者机构： 1.Yunnan Acad Agr Sci, Natl Engn Res Ctr Ornamental Hort, Flower Res Inst, Kunming 650205, Yunnan, Peoples R China

2.Ethiopian Inst Agr Res, POB 2003, Addis Ababa, Ethiopia

3.Yunnan Acad Agr Sci, Inst Hort Crops, Kunming 650205, Yunnan, Peoples R China

4.Yunnan Acad Agr Sci, Inst Med Plant, Kunming 650205, Yunnan, Peoples R China

关键词： antioxidants; chlorophyll fluorescence; fluorescence imaging; photosynthesis; photosystem II (PSII) photochemistry; screening

期刊名称：EUROPEAN JOURNAL OF HORTICULTURAL SCIENCE （ 影响因子：1.482； 五年影响因子：1.503 ）

ISSN： 1611-4426

年卷期： 2021 年 86 卷 3 期

页码：

收录情况： SCI

摘要： As a result of global warming, heat stress has become the major challenge to plant growth and development. To avert this challenge, development of heat stress tolerant cultivars is the major way forward. Here we evaluated the response of three Rhododendron hybrids (R. 'XXL' x R. 'Jingle Bells', R. 'XXL' x R. 'Cosmopolitan', and IL 'XXL') to heat stress under control conditions. Rhododendron in vitro plantlets were placed in a growth chamber at 38 degrees C for 18 days and the plantlets were monitored at 0, 3, 6, 12 and 18 day for chlorophyll fluorescence parameters (Fv/Fm and F'v/F'm), SOD activity and proline content. As heat stress duration prolonged, chlorophyll fluorescence parameters (Fv/Fm and F'v/F'm) gradually decreased. However, F'v/F'm better differentiated hybrids for heat stress response than Fv/Fm. R. 'XXL' x R. 'Jingle Bells' showed significantly lower Fv/Fm than other hybrids only at 12th day. On the other hand, IL 'XXL. showed significantly higher F'v/F'm among hybrids. In addition, significantly higher SOD activity and proline accumulation observed at 12th day and 6th day of heat stress treatment for R. 'XXL', respectively. Our work also showed the first attempt of using chlorophyll fluorescence imaging system to study heat stress response of in vitro raised Rhododendron. This study provides useful information for gene banks to screen large Rhododendron germplasm collections for heat stress tolerance.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：云南省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台